Queen Elizabeth II greets Cheryl Cole from Girls Aloud after the Royal Variety Performance at the Royal Albert Hall in London.

Britain's Queen Elizabeth II greets Ashleigh and her performing dog named Pudsey after the annual entertainment event, The Royal Variety Performance, at the Royal Albert Hall in London, Monday Nov. 19, 2012. The Royal Variety Performance is a one-off night of world class entertainment acts in aid of charity. (AP Photo / Andrew Winning)

Queen Elizabeth II greets Cheryl Cole (3rd from right) from Girls Aloud after the Royal Variety Performance at the Royal Albert Hall in London.

Queen Elizabeth II arrives at the Royal Variety Performance at the Royal Albert Hall in London.

Queen Elizabeth II arrives at the Royal Variety Performance at the Royal Albert Hall in London.

Queen Elizabeth II arrives at the Royal Variety Performance at the Royal Albert Hall in London.

Queen Elizabeth II greets Ashleigh and her performing dog Pudsey after the Royal Variety Performance at the Royal Albert Hall in London.

Queen Elizabeth II greets Ashleigh and her performing dog Pudsey after the Royal Variety Performance at the Royal Albert Hall in London.

Queen Elizabeth II greets tenor Placido Domingo after the Royal Variety Performance at the Royal Albert Hall in London.

Queen Elizabeth II greets tenor Andrea Bocelli after the Royal Variety Performance at the Royal Albert Hall in London.

Queen Elizabeth II greets singer Kyle Minogue after the Royal Variety Performance at the Royal Albert Hall in London.

Queen Elizabeth II greets singer Kyle Minogue after the Royal Variety Performance at the Royal Albert Hall in London.

Queen Elizabeth II greets performers from the musical &quot;Matilda&quot; after the Royal Variety Performance at the Royal Albert Hall in London.

Queen Elizabeth II greets performers from the musical &quot;Matilda&quot; after the Royal Variety Performance at the Royal Albert Hall in London.

Queen Elizabeth II greets comedian David Walliams after the Royal Variety Performance at the Royal Albert Hall in London.

Queen Elizabeth II greets Cheryl Cole from Girls Aloud after the Royal Variety Performance at the Royal Albert Hall in London.

Britain's Queen Elizabeth II greets singer Kyle Minogue after after the annual entertainment event, The Royal Variety Performance, at the Royal Albert Hall in London, Monday Nov. 19, 2012. The Royal Variety Performance is a one-off night of world class entertainment acts in aid of charity. (AP Photo / Andrew Winning)

Britain's Queen Elizabeth II seen with singers Girls Aloud, as she greets the artists after the annual entertainment event, The Royal Variety Performance, at the Royal Albert Hall in London, Monday Nov. 19, 2012. The Royal Variety Performance is a one-off night of world class entertainment acts in aid of charity. (AP Photo / Andrew Winning)

Britain's Queen Elizabeth II greets singer Kyle Minogue after after the annual entertainment event, The Royal Variety Performance, at the Royal Albert Hall in London, Monday Nov. 19, 2012. The Royal Variety Performance is a one-off night of world class entertainment acts in aid of charity. (AP Photo / Andrew Winning)

Britain's Queen Elizabeth II greets tenor Andrea Bocelli after after the annual entertainment event, The Royal Variety Performance, at the Royal Albert Hall in London, Monday Nov. 19, 2012. The Royal Variety Performance is a one-off night of world class entertainment acts in aid of charity. (AP Photo / Andrew Winning)

Queen Elizabeth II arrives at the Royal Variety Performance at the Royal Albert Hall in London.

Queen Elizabeth II arrives at the Royal Variety Performance at the Royal Albert Hall in London.

Queen Elizabeth II arrives at the Royal Variety Performance at the Royal Albert Hall in London.